A Centers for Disease Control and Prevention (CDC) website has been changed to reflect the belief of Robert F Kennedy Jr , the US health and human services secretary, that there is a link between vaccines and autism, a view flatly contradicted by experts and scientifically validated studies.

Public health and autism specialists roundly condemned the alteration to the CDC’s “vaccine safety” webpage, after it was changed to read: “The statement ‘Vaccines do not cause autism’ is not an evidence-based claim.”

Pointedly, it added: “Studies supporting a link have been ignored by health authorities.”

The extent of the change was further underlined by an asterisk affixed to a pre-existing statement underneath, reading “vaccines do not cause autism”.

An explanation at the bottom of the page s

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